ARM

Tag: LASIC

  • New Aerosol Hygroscopicity Kappa Data Available

    Sample CCNSMPSKAPPA plots from the Surface Atmosphere Integrated Field Laboratory (SAIL) field campaign in Colorado show kappa values within critical diameter-supersaturation field space (top) and a time series of kappa (bottom) on March 15, 2022, at ARM’s Aerosol Observing System (AOS) site on Crested Butte Mountain. The CCN particle counter and SMPS operated as part…

  • New Aerosol Hygroscopicity Kappa Data Released for 3 ARM Sites

    Sample CCNSMPSKAPPA plots from the Cloud, Aerosol, and Complex Terrain Interactions (CACTI) field campaign show kappa values within critical diameter-supersaturation field space, top, and a time series of kappa, bottom, on November 15, 2018. Hygroscopicity is the ability of a particle to take up moisture from the environment and is important for understanding the formation…

  • Cloud Droplet Number Concentration Product Updated

    This sample plot from the Southern Great Plains Central Facility shows the droplet number concentration for October 30, 2019. New data are available from the Droplet Number Concentration value-added product (NDROP VAP), which has been updated to use additional inputs. This will allow NDROP to be available quicker with better retrievals and to be applied…

  • AERI Noise Filtered Data Available for MARCUS, LASIC Campaigns

    This quicklook image shows the time series of the radiance in window channels for Channel 1 at 900 cm-1 and Channel 2 at 2,600 cm-1 on July 5, 2017, during the Layered Atlantic Smoke Interactions with Clouds (LASIC) field campaign. The Atmospheric Emitted Radiance Interferometer Noise Filtered (AERINF) value-added product (VAP) is now in production…

  • LASIC Findings Integral to Southeast Atlantic Workshop

    Editor’s note: From June 2016 through October 2017, ARM conducted the Layered Atlantic Smoke Interactions with Clouds (LASIC) field campaign on Ascension Island in the South Atlantic Ocean. LASIC focused on smoke aerosols from African biomass fires and their interaction with clouds while moving over the Atlantic. From mid-August to mid-September 2017, the U.K. CLoud-Aerosol-Radiation Interaction…

  • Cloud Microphysics VAP Evaluation Data Available for LASIC Field Campaign

    Cloud microphysical properties affect cloud radiative heating, precipitation formation, and aerosol-cloud interactions, among other important atmospheric processes. The first field campaign data are now available from a value-added product (VAP) that builds upon the Atmospheric Radiation Measurement (ARM) user facility’s historical Continuous Baseline Microphysical Retrieval (MICROBASE) VAP. The Improved MICROBASE Product with Uncertainties (MICROBASEKAPLUS) provides…

  • Radiation Data Quality VAP Expands to LASIC Field Campaign Site

    Radiometers on Ascension Island helped collect data as part of the LASIC field campaign, which studied smoke particles and their interaction with clouds as they passed westward over the Atlantic Ocean. A new release for the Data Quality Assessment for ARM Radiation Data (QCRAD) value-added product (VAP) covers the mobile deployment to Ascension Island for…

  • New Microwave Radiometer Retrievals VAP Data Available for Several ARM Campaigns and Sites

    Microwave radiometers, such as this one at ARM’s North Slope of Alaska atmospheric observatory, provide time-series measurements of column-integrated amounts of water vapor and liquid water. The Microwave Radiometer Retrievals (MWRRET) value-added product (VAP) has been processed for the following Atmospheric Radiation Measurement (ARM) user facility field campaigns and measurement sites: the ARM North Slope…

  • ARM Cloud Radar-Remote Sensing Evaluation Data Available for LASIC Campaign

    Plots from the WACR-ARSCL value-added product show reflectivity best estimate (top) and mean Doppler velocity (bottom) as captured February 22, 2017, during the LASIC field campaign on Ascension Island. Evaluation data for the W-Band ARM Cloud Radar-Active Remote Sensing of Clouds (WACR-ARSCL) value-added product are now available for the ARM Mobile Facility deployment to Ascension…

  • Aerosol Optical Properties VAP Now Available

    The first plot shows the aerosol extensive property of light absorption for nominally “red,” “green,” and “blue” light over a two-week period at Ascension Island. The second plot shows the wavelength dependence of aerosol absorption—an intensive property—which describes the nature rather than the abundance of the absorption. The Aerosol Optical Properties (AOP) value-added product (VAP)…